excretory products

Question 1

most toxic nitrogenous waste is

Answer 1

ammonia

Question 2

least toxic nitrogenous waste is

Answer 2

uric acid

Question 3

ammonia is lost through _____ in fish

Answer 3

diffusion from body surface, gills as ammonium ions

Question 4

ammonotelic organisms are

Answer 4

osteichthytes, aquatic amphibians, aquatic insects

Question 5

ureotelic organisms are

Answer 5

mammals, land amphibians, chondrichthytes

Question 6

uricotelic organisms are

Answer 6

land insects, birds, reptiles, land snails

Question 7

ornithine cycle in liver converts ____ into ____

Answer 7

ammonia + co2 to urea

Question 8

excretory organs are absent in

Answer 8

echinodermata

Question 9

prawns excrete through

Answer 9

antennal gland and green gland

Question 10

left kidney is located

Answer 10

slightly higher than left

Question 11

length of kidney

Answer 11

10-12 cm

Question 12

width of kidney

Answer 12

5-6 cm

Question 13

thickness of kidney

Answer 13

2-3 cm

Question 14

weight of kidney

Answer 14

120- 170 g

Question 15

peritubular capillaries arise from

Answer 15

efferent arteriole

Question 16

efferent arteriole is ____ than afferent

Answer 16

thinner

Question 17

GFR is

Answer 17

125 ml/min or 180L/day

Question 18

cells of bowman’s capsule are called

Answer 18

podocytes

Question 19

juxtaglomerular apparatus is located between ___

Answer 19

afferent arteriole and DCT

Question 20

amount of urine excreted per day is

Answer 20

1-1.5 L

Question 21

amount of urea excreted per day is

Answer 21

25-30 g

Question 22

PCT reabsorbs ___

Answer 22

70-80% electrolytes and water

Question 23

glucose is a ____ substance and is absorbed _____

Answer 23

high threshold; actively

Question 24

creatine is a ____ and is absorbed ____

Answer 24

low threshold; passively

Question 25

descending limb is _____ to water and ____ to salts

Answer 25

permeable; impermeable

Question 26

osmolarity in the cortex is

Answer 26

300 mOsmol

Question 27

osmolarity in medulla is

Answer 27

1200 mOsmol

Question 28

release of urine involves the simultaneous

Answer 28

contraction of urinary bladder + relaxation of urethral sphincter

Question 29

amount of co2 excreted by lungs is

Answer 29

200 ml/min

Question 30

pH of urine is

Answer 30

6

Question 31

heparin is an

Answer 31

anticoagulant

Question 32

in dialysis, blood is taken from a suitable ___

Answer 32

artery

Question 33

dialyzing fluid has the same constitution as plasma except that ____

Answer 33

urea is absent

Question 34

the membrane of dialysing tube is

Answer 34

cellophane membrane

Question 35

renal caliculi are

Answer 35

calcium oxalate crystals

Question 36

glomerular filtrate is

Answer 36

hypotonic

Question 37

pct filtrate is

Answer 37

isotonic

Question 38

ascending limb filtrate is

Answer 38

hypotonic

Question 39

descending limb filtrate is

Answer 39

hypertonic

Question 40

dct filtrate is

Answer 40

hypertonic

Question 41

urea is excreted into the ____

Answer 41

ascending limb

Question 42

urea is transported into the interstitium by

Answer 42

collecting duct

Question 43

Amphioxus excrete through

Answer 43

Protonephridia

Question 44

Notch of kidney

Answer 44

Hilum

Question 45

Renal pelvis is

Answer 45

Broad funnel shaped space

Question 46

Extensions of cortex

Answer 46

Columns of bertini